SAFETY DATA SHEET
CALCIUM HYDROXIDE
Page: 1
th
Compilation date: 4 March 2016
Revision No: 1
Section 1: Identification of the substance/mixture and of the company/undertaking
1.1. Product identifier
Product name: CALCIUM HYDROXIDE
CAS number: 1305-62-0
EINECS number: 215-137-3
Product code: GPC9302
1.2. Relevant identified uses of the substance or mixture and uses advised against
Use of substance / mixture: Manufacture of substances. Laboratory chemicals
1.3. Details of the supplier of the safety data sheet
Company name: Mercury Safety Products Ltd
6 Chartwell Avenue
Ruddington
Nottingham
NG11 6DJ
United Kingdom
Tel: +44 115 921 3833
Fax: +44 115 921 3879
Email: i n f o @ m e r c u r y s a f e t y . c o . u k
1.4. Emergency telephone number
Emergency tel: +44 115 921 3833 (office hours only)
National Poisons Information Service (24 hours) in UK dial 111
Section 2: Hazards identification
2.1. Classification of the substance or mixture
Classification under CLP: Skin Irrit. 2: H315; Eye Dam. 1: H318; STOT SE 3: H335
Most important adverse effects: Causes skin irritation. Causes serious eye damage. May cause respiratory irritation.
2.2. Label elements
Label elements under CLP:
Hazard statements: H315: Causes skin irritation.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.
Signal words: Danger
Hazard pictograms: GHS05: Corrosion
GHS07: Exclamation mark
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SAFETY DATA SHEET
CALCIUM HYDROXIDE
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Precautionary statements: P261: Avoid breathing dust.
P280: Wear protective gloves/eye protection/face protection.
P305+351+338: IF IN EYES: Rinse cautiously with water for several minutes. Remove
contact lenses, if present and easy to do. Continue rinsing.
2.3. Other hazards
PBT: This product is not identified as a PBT/vPvB substance.
Section 3: Composition/information oningredients
3.1. Substances
Chemical identity: CALCIUMHYDROXIDE
CAS number: 1305-62-0
EINECS number: 215-137-3
Contains: Molecular Formula: H2CaO2
Molecular Weight: 74.09 g/mol.
Section 4: First aid measures
4.1. Description of first aid measures
Skin contact: Wash immediately with plenty of soap and water. Consult a doctor.
Eye contact: Immediately flush with plenty of water for up to 15 minutes. Remove any contact lenses
and open eyes wide apart. Get medical attenton immediately. Continue to rinse.
Ingestion: Do not induce vomiting. Never give anything by mouth to an unconscious person. Wash
out mouth with water. Consult a doctor.
Inhalation: If breathed in, move person into fresh air. If not breathing, give artificial respiration.
Consult a doctor.
4.2. Most important symptoms and effects, both acute and delayed
Skin contact: May be harmful if absorbed through the skin. There may be irritation and redness at the
site of contact.
Eye contact: There may be irritation and pain. The eyes may water profusely. The vision may become
blurred.
Ingestion: May be harmful if swallowed. There may be soreness and redness of the mouth and
throat. There may be difficulty swallowing. Nausea and stomach pain may occur. There
may be vomiting.
Inhalation: May be harmful if inhaled. May cause respiratory tract irritation. There may be irritation of
the throat with a feeling of tightness in the chest. Exposure may cause coughing or
wheezing. May cause drowsiness and dizziness.
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SAFETY DATA SHEET
CALCIUM HYDROXIDE
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4.3. Indication of any immediate medical attention and special treatment needed
Immediate / special treatment: Show this safety data sheet to the doctor in attendance. Eye bathing equipment should
be available on the premises.
Section 5: Fire-fighting measures
5.1. Extinguishing media
Extinguishing media: Water spray. Dry chemical powder. Alcohol resistant foam. Carbon dioxide.
5.2. Special hazards arising from the substance or mixture
Exposure hazards: Calcium oxide.
5.3. Advice for fire-fighters
Advice for fire-fighters: Wear self-contained breathing apparatus. Wear protective clothing to prevent contact
with skin and eyes. Use water spray to cool unopened containers.
Section 6: Accidental release measures
6.1. Personal precautions, protective equipment and emergency procedures
Personal precautions: Use personal protective equipment. Avoid dust formation Avoid breathing vapours, mist
or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing
dust. For personal protection see section 8.
6.2. Environmental precautions
Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains.
Discharge into environment must be avoided.
6.3. Methods and material for containment and cleaning up
Clean-up procedures: Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in
suitable, closed containers for disposal.
6.4. Reference to other sections
Reference to other sections: For personal protection, see section 8. For waste disposal, see section 13.
Section 7: Handling and storage
7.1. Precautions for safe handling
Handling requirements: Avoid direct contact with the substance. Avoid contact with skin and eyes. Avoid formation
of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is
formed. For precautions see section 2.2.
7.2. Conditions for safe storage, including any incompatibilities
Storage conditions: Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
Moisture sensitive. Air sensitive
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SAFETY DATA SHEET
CALCIUM HYDROXIDE
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7.3. Specific end use(s)
Specific end use(s): Mixed with sulphur, for the absorption of spilled metallic mercury
Section 8: Exposure controls/personal protection
8.1. Control parameters
Workplace exposure limits:
State
Respirable dust
8 hour TWA
UK
15 min. STEL
5 mg/m3
8 hour TWA
-
15 min. STEL
-
-
8.1. DNEL/PNEC Values
DNEL / PNEC No data available.
8.2. Exposure controls
Engineering measures: Handle in accordance with good industrial hygiene and safety practice. Wash hands
before and after breaks and at the end of workday.
Respiratory protection: Where risk assessment shows air-purifying respirators are appropriate use a full-face
respirator with multi-purpose combination (US) or type ABEK (EN 14387) respirator
cartridges as a backup to engineering controls. If the respirator is the sole means of
protection, use a full-face supplied air
respirator. Use respirators and components tested and approved under appropriate
government standards such as NIOSH (US) or CEN (EU).
Hand protection: Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal
technique (without touching glove's outer surface) to avoid skin contact with this product.
Dispose of contaminated gloves after use in accordance with application laws and good
laboratory practises. Wash and dry hands. The selected protective gloves have to satisfy
the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.
Full contact - Material: Nitrile rubber. Minimum layer thickness: 0.11mm. Break through
time: 8 hrs. Splash contact - Material: Nitrile rubber. Minimum layer thickness: 0.11mm.
Break through time: 8hrs. If used in solution, or mixed with substances, and under
conditions which differ from EN 374, contact the supplier of the CE approved gloves.
Eye protection: Face shield and safety glasses. Use equipment for eye protection tested and approved
under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection: Complete suit protecting against chemicals. The type of protective equipment must be
selected according to the concentration and amount of the dangerous substance at the
specific workplace.
Environmental: Prevent further leakage or spillage if safe to do so. Do not let product enter drains.
Discharge into the environment must be avoided.
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SAFETY DATA SHEET
CALCIUM HYDROXIDE
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Section 9: Physical and chemical properties
9.1. Information on basic physical and chemical properties
State: Powder
Colour: White
Oxidising: The substance or mixture is not classified as oxidizing.
Solubility in water: Soluble
Melting point/rangeÄC: 450
Relative density: 2.24
pH: 12.5 at 20C
9.2. Other information
Other information: No data available.
Section 10: Stability and reactivity
10.1. Reactivity
Reactivity: Stable under recommended transport or storage conditions.
10.2. Chemical stability
Chemical stability: Stable under recommended storage conditions.
10.3. Possibility of hazardous reactions
Hazardous reactions: Hazardous reactions will not occur under normal transport or storage conditions.
10.4. Conditions to avoid
Conditions to avoid: Air. Moisture
10.5. Incompatible materials
Materials to avoid: Strong acids.
10.6. Hazardous decomposition products
Haz. decomp. products: Other decomposition products - no data available. In the event of fire: see section 5
Section 11: Toxicological information
11.1. Information on toxicological effects
Toxicity values:
Route
ORAL
Species
Test
RAT
LD50
Value
Units
7,340 mg/kg
Relevant hazards for substance:
Hazard
Route
Basis
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CALCIUM HYDROXIDE
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Skin corrosion/irritation
DRM
Based on test data
Serious eye damage/irritation
OPT
Based on test data
STOT-single exposure
INH
Based on test data
Symptoms / routes of exposure
Skin contact: May be harmful if absorbed through the skin. There may be irritation and redness at the
site of contact.
Eye contact: There may be irritation and pain. The eyes may water profusely. The vision may become
blurred.
Ingestion: May be harmful if swallowed. There may be soreness and redness of the mouth and
throat. There may be difficulty swallowing. Nausea and stomach pain may occur. There
may be vomiting.
Inhalation: May be harmful if inhaled. May cause respiratory tract irritation. There may be irritation of
the throat with a feeling of tightness in the chest. Exposure may cause coughing or
wheezing. May cause drowsiness and dizziness.
Other information: RTECS: EW2800000
Section 12: Ecological information
12.1. Toxicity
Ecotoxicity values:
Species
Test
Value
Units
Clarias gariepinus
96H LC50
33.884 mg/l
Daphnia magna (Water flea)
48H EC50
49.1 mg/l
Pseudokirchneriella subcapitata (Green algae)
72H EC50
184.6 mg/l
12.2. Persistence and degradability
Persistence and degradability: The methods for determining the biological degradability are not applicable to inorganic
substances.
12.3. Bioaccumulative potential
Bioaccumulative potential: No bioaccumulation potential.
12.4. Mobility in soil
Mobility: Soluble in water.
12.5. Results of PBT and vPvB assessment
PBT identification: This product is not identified as a PBT/vPvB substance.
12.6. Other adverse effects
Other adverse effects: Harmful to aquatic organisms.
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CALCIUM HYDROXIDE
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Section 13: Disposal considerations
13.1. Waste treatment methods
Disposal operations: Offer surplus and non-recycable solutions to a licensed disposal company. Dissolve or
mix the material with a combustible solvent and burn in a chemical incinerator equipped
with an afterburner and scrubber.
Disposal of packaging: Dispose of as unused product.
NB: The user's attention is drawn to the possible existence of regional or national
regulations regarding disposal.
Section 14: Transport information
Transport class: This product does not require a classification for transport.
Section 15: Regulatory information
15.1. Safety, health and environmental regulations/legislation specific for the substance or mixture
Specific regulations: This safety datasheet complies with the requirements of Regulation (EC) No.
1907/2006.
15.2. Chemical Safety Assessment
Chemical safety assessment: For this product a chemical safety assessment was not carried out.
Section 16: Other information
Other information
Other information: This safety data sheet is prepared in accordance with Commission Regulation (EU) No
453/2010.
* indicates text in the SDS which has changed since the last revision.
Phrases used in s.2 and 3: H315: Causes skin irritation.
H318: Causes serious eye damage.
H335: May cause respiratory irritation.
Legal disclaimer: The above information is believed to be correct but does not purport to be all inclusive
and shall be used only as a guide. This company shall not be held liable for any
damage resulting from handling or from contact with the above product.
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